I like my Iphone.
I'm not a crazy app-user or anything. It's very useful when tethering my phone and it acts as an IPod for all my music. Convenient if you ask me. I'm fairly certain everyone experiences dropped calls...whether its because of phone, carrier or location, it's inevitable.
I definitely dig the newer Nexus type phones too. Great stuff. If only they had a similar quality screen as the Iphone, it'd be exceptional.
In the end it all depends on what you plan to do with your phone and how you like your phone to look.
The Iphone and a few select phones that run Droid I'd consider to be the best.
Now if someone can just replicate BB's e-mail client...